But now consider a situation where standard quantum theory predicts the
appearance of a QSMDS. As we have seen above, this is the case, for instance, in the initial
stage of a quantum measurement experiment, when the measured physical system
\(S\)  becomes entangled with the various components of the measurement
apparatus \(M\) . The wave function \(\Phi \)  is strongly
attracted towards the region of space where all Bohmian positions move
together. This of course completely changes the quantum distribution \(\left|\Phi \right|^{2}\)  in configuration space, which
suddenly destroys the quantum equilibrium between the two distributions.
But this disappearance of the quantum equilibrium remains a short transient
effect: immediately after the collapse of \(\Phi \)  has taken place, the QSMDS has disappeared, and the quantum
relaxation process discussed by Valentini et al. [1]}, [2]} tends to restore the
equilibrium. A situation similar to the one before measurement is then quickly
recovered.
